Anode and process of manufacturing the same.



M. HUTH,

ANODE AND PROCESS OF MANUFACTURING THE SAME.

APPLIUATION FILED NOV. 22, 1910.

1,043,937, Patented Nov. 12,1912.

' E 4 Fig.3 a v a 4 v I 4 41/ y m Y 6 f i7 )9 asses: fizz/e22 42 2. cm. Q 3W MAX HUTH, OF CHARLOTTENBURG, GERMANY, ASSIG-NQR T0 SIEMENS & HA LSKE A. Ga, 0]? BERLIN, GERMANY, A CORPORATION OF GERMANY.

ANODE AND PROCESS MANUFACTURING THE SAME.

Patented Nov. 12, n.

Application filed November 22, 1910. Serial No. 593,643.

To all whom it may concern:

Be itknown that I, MAX HUTH, a subject of the German Emperor, and residing at Charlottenburg, near Berlin, Germany, have invented. a certain new and useful Improved Anode and Process of Manufacturing the Same,

of which the following is a specification.

My invention relates to the manufacture of peroxid of manganese anodes.

When electrolyzing aqueous solutions of salts, as e. 9. solutions ofsulfate of zinc, nitrate of copper and the like, it has been preferable, particularly when freeacid is present, to employ an unattackable anode, e. g. in the form ofmassive blocks of chemically pure peroxid of manganese, because detrimental contamination of the electrolyte is avoided with certainty by means of the same. Such anodes have however the disadvantage that they. are relatively bad conductors of electricity and a primary object of my invention is to remedy this defeet and to providemassive anodes of the kind described which are relatively good conductors of electricity.

My invention is illustrated in the accompanying drawing in WhiChr- Figure l is a longitudinal section through an anode on line AA in Fig. 2. Fig. 2 is a transverse section of said anode. Fig. 3 is a longitudinal section of an anode taken on line A'A of Fig. 4:. Fig. 4 is a transverse section of the anode illustrated in Fig. 3.

For carrying out my invention, I unite peroxid of manganese anodes with good conductors composed of peroxid of lead. I do this by embedding pieces or rods of peroxid of lead, which, as is known, could not heretofore be made in the form of plates or blocks in pure nitrate of manganese or in a mixture-of crystallized peroxid of man: ganese and nitrate of manganese, then mechanically. pressing the entire mass thus obtained in molds and finally heating the same. Owing to the heat the nitrate of manganese is converted into. peroxid of manganese, azotic oxids being separated.

, In the drawings are shown two forms of anodes illustrating my invention.

In Figs. 1 and 2 the crystalline of anode is indicated by the numeral 2. Em-

bedded in said mass of crystalline manganese peroxid are pieces 3 of any desired or convenient form, of lead peroxid.

In F igs. 3 and 4: lead peroxid are shown in the form of rods indicated by numeral 4.

In both examples of electrodesillustrated the peroxid of lead and the peroxid of man-.

ganese are united in a single solid block.

Terminal connections to these electrodes for" I I peroxid of lead conductors are intimately united with the peroxid of manganese mass, so that the desired increase in conductivity of the tained.

. I claim -1. An anode consisting of a solid block of crystalline peroxid of manganese having embedded therein pieces of electrically conductive lead peroxid.

'2. The herein described process of manufacturing peroxid of manganese anodes which consists in inserting pieces of lead peroxid in a mass composed of nitrate *of manganese, pressing the mass in a mold, heating the same and removing the body thus obtained from the mold. Q

' 3. The herein described process of manufacturing peroxid of manganese anodes, which consists in inserting rods of peroxid peroxid of mang'aneseanodes is ob the pieces of embedded I v of lead into a mass composed of nitrate of manganese and crystalline peroxid of manganese, in pressing the same into amold, in then heating the same, and in removing the body thus obtained from the mold.

In testimony whereofl have signed my name to this specification in the presence of two witnesses.

MAX HUTH.

Witnesses:

WALDEMAR HAUPT, HEnRY HAsPER. 

